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据“铁钢”(83—238)报道:通过水银熔池的透明底板或扁水银熔池可直接观察气体吹入口附近的喷气行为。而且发现,当节流孔出口气体线流速度一旦超过音速,气泡便会变成射流。森一美等人通过电子探
According to “Iron Steel” (83-238) reported: through the mercury pool of transparent floor or flat mercury pool can be directly observed near the gas blowing into the mouth of the jet. And found that when the orifice outlet gas stream velocity exceeds the speed of sound once, the bubble will become a jet. Senami and others through electronic exploration